To Get any Project for CSE, IT ECE, EEE Contact Me @ 09849539085, 09966235788 or mail us - ieeefinalsemprojects@gmail.co¬m-Visit Our Website: www.finalyearprojects.org
This document outlines a project to develop and implement an access control mechanism for outsourced data on the cloud. The project has four modules: a supporting application, service development, encryption/decryption, and role-based access. It discusses key terms like access control, access control models, outsourced data, and cloud computing. The system works by allowing a data owner to encrypt and outsource data to the cloud, which then processes and forwards the data to authorized users based on an agreed access policy.
Privacy preserving delegated access control in public cloudAswathy Rajan
This document summarizes a research paper that proposes a new approach called two layer encryption (TLE) to enforce fine-grained access control on confidential data stored in public clouds. The key aspects are:
1) TLE uses two layers of encryption - the data owner performs coarse-grained encryption and the cloud performs fine-grained encryption on top based on access control policies provided by the owner.
2) A challenging problem is how to decompose access control policies for the two layer encryption to work while minimizing what the owner manages and ensuring data confidentiality. The paper shows this is an NP-complete problem.
3) The paper proposes optimization algorithms to find near optimal decompositions and evaluates TLE
Privacy preserving delegated access control in public cloudsLeMeniz Infotech
Privacy preserving delegated access control in public clouds
Current approaches to enforce fine-grained access control on confidential data hosted in the cloud are based on fine-grained encryption of the data. Under such approaches, data owners are in charge of encrypting the data before uploading them on the cloud and re-encrypting the data whenever user credentials or authorization policies change. Data owners thus incur high communication and computation costs.
This document proposes a new approach called two layer encryption (TLE) to delegate fine-grained access control enforcement to public clouds while preserving data and user privacy. Under TLE, the data owner first performs coarse-grained encryption on data items and uploads them to the cloud. Then the cloud performs fine-grained re-encryption of the data based on access control policies provided by the owner. This allows user dynamics like revocations to be handled efficiently by the cloud without owner involvement. TLE also protects user attribute privacy from the cloud. Existing approaches require the owner to frequently re-encrypt and re-upload large amounts of data when users change, which is inefficient.
This document proposes a new approach called two layer encryption (TLE) to delegate fine-grained access control enforcement to public clouds while preserving data and user privacy. Under TLE, the data owner performs coarse-grained encryption and the cloud performs fine-grained re-encryption based on access control policies. This addresses limitations of existing approaches where the data owner must re-encrypt data whenever user credentials change. The TLE approach also keeps user identity attributes and data confidential from the cloud.
This document outlines a project to develop and implement an access control mechanism for outsourced data on the cloud. The project has four modules: a supporting application, service development, encryption/decryption, and role-based access. It discusses key terms like access control, access control models, outsourced data, and cloud computing. The system works by allowing a data owner to encrypt and outsource data to the cloud, which then processes and forwards the data to authorized users based on an agreed access policy.
Privacy preserving delegated access control in public cloudAswathy Rajan
This document summarizes a research paper that proposes a new approach called two layer encryption (TLE) to enforce fine-grained access control on confidential data stored in public clouds. The key aspects are:
1) TLE uses two layers of encryption - the data owner performs coarse-grained encryption and the cloud performs fine-grained encryption on top based on access control policies provided by the owner.
2) A challenging problem is how to decompose access control policies for the two layer encryption to work while minimizing what the owner manages and ensuring data confidentiality. The paper shows this is an NP-complete problem.
3) The paper proposes optimization algorithms to find near optimal decompositions and evaluates TLE
Privacy preserving delegated access control in public cloudsLeMeniz Infotech
Privacy preserving delegated access control in public clouds
Current approaches to enforce fine-grained access control on confidential data hosted in the cloud are based on fine-grained encryption of the data. Under such approaches, data owners are in charge of encrypting the data before uploading them on the cloud and re-encrypting the data whenever user credentials or authorization policies change. Data owners thus incur high communication and computation costs.
This document proposes a new approach called two layer encryption (TLE) to delegate fine-grained access control enforcement to public clouds while preserving data and user privacy. Under TLE, the data owner first performs coarse-grained encryption on data items and uploads them to the cloud. Then the cloud performs fine-grained re-encryption of the data based on access control policies provided by the owner. This allows user dynamics like revocations to be handled efficiently by the cloud without owner involvement. TLE also protects user attribute privacy from the cloud. Existing approaches require the owner to frequently re-encrypt and re-upload large amounts of data when users change, which is inefficient.
This document proposes a new approach called two layer encryption (TLE) to delegate fine-grained access control enforcement to public clouds while preserving data and user privacy. Under TLE, the data owner performs coarse-grained encryption and the cloud performs fine-grained re-encryption based on access control policies. This addresses limitations of existing approaches where the data owner must re-encrypt data whenever user credentials change. The TLE approach also keeps user identity attributes and data confidential from the cloud.
An efficient certificateless encryption for data sharing on public cloudAbhijeet Patil
This document summarizes a seminar presentation on an efficient certificate-less encryption for secure data sharing in public clouds. The presentation covers the introduction to cloud computing and encryption/decryption techniques. It discusses the scope of applying mediated certificate-less public key encryption to solve key escrow and revocation problems. The objective is to design an attribute-based encryption scheme that allows encrypted data access based on access policies. The presentation reviews existing algorithms and proposes a pairing-free certificate-less public key cryptography approach. It describes the system architecture and implementation details. The results show the proposed scheme improves efficiency and provides confidentiality of data and keys when using untrusted public clouds.
We propose a mediated certificateless encryption scheme without pairing operations for securely sharing sensitive information in public clouds. Mediated certificateless public key encryption (mCL-PKE) solves the key escrow problem in identity based encryption and certificate revocation problem in public key cryptography.
Cloud computing is rapidly emerging due to the provisioning of elastic, flexible, and on demand storage and computing services for customers. The data is usually encrypted before storing to the cloud. The access control, key management, encryption, and decryption processes are handled by the customers to ensure data security. A single key shared between all group members will result in the access of past data to a newly joining member. The aforesaid situation violates the confidentiality and the principle of least privilege.
SECURE DATA SHARING IN CLOUD COMPUTING USING REVOCABLE-STORAGE IDENTITY-BASED...Nexgen Technology
TO GET THIS PROJECT COMPLETE SOURCE ON SUPPORT WITH EXECUTION PLEASE CALL BELOW CONTACT DETAILS
MOBILE: 9791938249, 0413-2211159, WEB: WWW.NEXGENPROJECT.COM,WWW.FINALYEAR-IEEEPROJECTS.COM, EMAIL:Praveen@nexgenproject.com
NEXGEN TECHNOLOGY provides total software solutions to its customers. Apsys works closely with the customers to identify their business processes for computerization and help them implement state-of-the-art solutions. By identifying and enhancing their processes through information technology solutions. NEXGEN TECHNOLOGY help it customers optimally use their resources.
The document proposes a Cloud Information Accountability (CIA) framework to address concerns about lack of control and transparency when data is stored in the cloud. The CIA framework uses a novel logging and auditing technique that automatically logs any access to user data in a decentralized manner. It allows data owners to track how their data is being used according to service agreements or policies. The framework has two major components: a logger that is strongly coupled with user data, and a log harmonizer. The CIA framework aims to provide transparency, enforce access controls, and strengthen user control over their cloud data.
Decentralized access control with anonymous authentication of data stored in ...LeMeniz Infotech
Decentralized access control with anonymous authentication of data stored in clouds
A new decentralized access control scheme is proposed for secure data storage in clouds that supports anonymous authentication. In the proposed scheme, the cloud verifies the authenticity of the series without knowing the user’s identity before storing data. Access control is enabled, in which only valid users are able to decrypt the stored information.
JPJ1405 Decentralized Access Control With Anonymous Authentication of Data ...chennaijp
We are good ieee java projects development center in chennai and pondicherry. We guided advanced java techonolgies projects of cloud computing, data mining, Secure Computing, Networking, Parallel & Distributed Systems, Mobile Computing and Service Computing (Web Service).
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/java-projects/
This document summarizes a research paper that proposes a public auditing scheme for regenerating-code-based cloud storage. The scheme introduces a proxy that can regenerate authenticators on behalf of data owners to solve issues when authenticators fail in the absence of owners. It also designs a novel public verifiable authenticator generated using keys that can be regenerated using partial keys. Extensive analysis shows the scheme is provably secure and efficient enough to integrate into regenerating-code-based cloud storage.
Decentralized access control with anonymous authentication of data stored in ...Adz91 Digital Ads Pvt Ltd
The document proposes a decentralized access control scheme for secure data storage in clouds that supports anonymous authentication. The scheme allows clouds to verify the authenticity of users without knowing their identity before storing data. It also enables access control so that only valid users can decrypt stored information. The scheme prevents replay attacks and supports creation, modification, and reading of stored data. It further addresses user revocation and uses a decentralized approach for key distribution, unlike other centralized access control schemes for clouds.
Decentralized access control with anonymous authentication of data stored in ...Nexgen Technology
Ecruitment Solutions (ECS) is one of the leading Delhi based Software Development & HR Consulting Firm, which is assessed at the level of ISO 9001:2008 standard. ECS offers an awesome project and product based solutions to many customers around the globe.
In addition, ECS has also widened its wings by the way consummating academic projects especially for the final year professional degree students in India. ECS consist of a technical team that has solved many IEEE papers and delivered world-class solutions .
The document discusses privacy-preserving public auditing for ensuring data integrity in cloud computing. It provides an overview of cloud data services and the need for privacy mechanisms when data is shared. Several existing works related to public auditing and their advantages/disadvantages are summarized. The authors then propose a scheme for privacy-preserving public auditing that supports batch auditing and data dynamics. The scheme allows an external auditor to audit user data across multiple requests while preserving privacy.
This document proposes a system for public auditing of data stored in the cloud while preserving privacy. It uses homomorphic linear authenticators with random masking to guarantee data privacy. A third party auditor is used to verify the integrity of outsourced data on demand without retrieving the entire dataset. The system aims to prevent data leakage and enhance security with mobile message alerts when unauthorized access is detected. It further improves auditing using a multicast batch RSA authentication scheme.
Secure Data Sharing in Cloud Computing Using Revocable-Storage Identity-Based...Yashwanth Reddy
This document proposes a revocable-storage identity-based encryption (RS-IBE) scheme to provide secure data sharing in cloud computing. It discusses the system architecture, modules, UML diagrams, and testing process. The key components are the data provider, cloud users, and auditor. The data provider encrypts and uploads data to the cloud, and can later revoke access and update ciphertexts. Cloud users search for files and request decryption keys from the auditor. The auditor generates and provides the necessary keys. The document presents formal definitions for RS-IBE and describes a prototype implementation to demonstrate the approach.
A New Mode to Ensure Security in Cloud Computing ServicesMahmuda Rahman
The document presents a proposed model for ensuring security in cloud computing services. The model has two phases: (1) Storing data involves classifying data sensitivity, building indexes, encrypting data and generating authentication codes before transmitting to the cloud. (2) Retrieving data requires users to register, authenticate with the data owner, have their requests verified by the owner's digital signature before the cloud can process searches and return encrypted files to users, who decrypt with keys from owners. The goal is to secure data throughout the entire cloud computing process, from storage to transmission to retrieval, using multiple security techniques.
Key aggregate searchable encryption (kase) for group data sharing via cloud s...Pvrtechnologies Nellore
This document describes a proposed cryptosystem for secure and efficient data sharing in cloud storage. It allows a user to encrypt files with different public keys but send a receiver a single constant-size decryption key that gives decryption rights to any set of ciphertexts. This allows flexible sharing of encrypted data while keeping decryption keys compact. The proposed system aims to address disadvantages of existing approaches like unexpected privilege escalation exposing all data or inefficient key sizes. It provides security based on number-theoretic assumptions without relying on servers for access control.
This document discusses privacy-preserving access control for data stored in public clouds. It proposes a two-layer encryption approach where the data owner performs coarse-grained encryption and the cloud performs fine-grained encryption based on access control policies. This delegates access control enforcement to the cloud while preserving data confidentiality and user privacy. Existing single-layer encryption approaches burden the data owner with all encryption tasks. The two-layer approach more efficiently handles policy and user changes by only updating the outer encryption layer at the cloud.
Secure and-verifiable-policy-update-outsourcing-for-big-data-access-control-i...Kamal Spring
Due to the high volume and velocity of big data, it is an effective option to store big data in the cloud, as the cloud has capabilities of storing big data and processing high volume of user access requests. Attribute-Based Encryption (ABE) is a promising technique to ensure the end-to-end security of big data in the cloud. However, the policy updating has always been a challenging issue when ABE is used to construct access control schemes. A trivial implementation is to let data owners retrieve the data and re-encrypt it under the new access policy, and then send it back to the cloud. This method, however, incurs a high communication overhead and heavy computation burden on data owners. A novel scheme is proposed that enable efficient access control with dynamic policy updating for big data in the cloud. Developing an outsourced policy updating method for ABE systems is focused. This method can avoid the transmission of encrypted data and minimize the computation work of data owners, by making use of the previously encrypted data with old access policies. Policy updating algorithms is proposed for different types of access policies. An efficient and secure method is proposed that allows data owner to check whether the cloud server has updated the ciphertexts correctly. The analysis shows that this policy updating outsourcing scheme is correct, complete, secure and efficient.
Secure and-verifiable-policy-update-outsourcing-for-big-data-access-control-i...Kamal Spring
Due to the high volume and velocity of big data, it is an effective option to store big data in the cloud, as the cloud has capabilities of storing big data and processing high volume of user access requests. Attribute-Based Encryption (ABE) is a promising technique to ensure the end-to-end security of big data in the cloud. However, the policy updating has always been a challenging issue when ABE is used to construct access control schemes. A trivial implementation is to let data owners retrieve the data and re-encrypt it under the new access policy, and then send it back to the cloud. This method, however, incurs a high communication overhead and heavy computation burden on data owners. A novel scheme is proposed that enable efficient access control with dynamic policy updating for big data in the cloud. Developing an outsourced policy updating method for ABE systems is focused. This method can avoid the transmission of encrypted data and minimize the computation work of data owners, by making use of the previously encrypted data with old access policies. Policy updating algorithms is proposed for different types of access policies. An efficient and secure method is proposed that allows data owner to check whether the cloud server has updated the ciphertexts correctly. The analysis shows that this policy updating outsourcing scheme is correct, complete, secure and efficient.
An efficient certificateless encryption for data sharing on public cloudAbhijeet Patil
This document summarizes a seminar presentation on an efficient certificate-less encryption for secure data sharing in public clouds. The presentation covers the introduction to cloud computing and encryption/decryption techniques. It discusses the scope of applying mediated certificate-less public key encryption to solve key escrow and revocation problems. The objective is to design an attribute-based encryption scheme that allows encrypted data access based on access policies. The presentation reviews existing algorithms and proposes a pairing-free certificate-less public key cryptography approach. It describes the system architecture and implementation details. The results show the proposed scheme improves efficiency and provides confidentiality of data and keys when using untrusted public clouds.
We propose a mediated certificateless encryption scheme without pairing operations for securely sharing sensitive information in public clouds. Mediated certificateless public key encryption (mCL-PKE) solves the key escrow problem in identity based encryption and certificate revocation problem in public key cryptography.
Cloud computing is rapidly emerging due to the provisioning of elastic, flexible, and on demand storage and computing services for customers. The data is usually encrypted before storing to the cloud. The access control, key management, encryption, and decryption processes are handled by the customers to ensure data security. A single key shared between all group members will result in the access of past data to a newly joining member. The aforesaid situation violates the confidentiality and the principle of least privilege.
SECURE DATA SHARING IN CLOUD COMPUTING USING REVOCABLE-STORAGE IDENTITY-BASED...Nexgen Technology
TO GET THIS PROJECT COMPLETE SOURCE ON SUPPORT WITH EXECUTION PLEASE CALL BELOW CONTACT DETAILS
MOBILE: 9791938249, 0413-2211159, WEB: WWW.NEXGENPROJECT.COM,WWW.FINALYEAR-IEEEPROJECTS.COM, EMAIL:Praveen@nexgenproject.com
NEXGEN TECHNOLOGY provides total software solutions to its customers. Apsys works closely with the customers to identify their business processes for computerization and help them implement state-of-the-art solutions. By identifying and enhancing their processes through information technology solutions. NEXGEN TECHNOLOGY help it customers optimally use their resources.
The document proposes a Cloud Information Accountability (CIA) framework to address concerns about lack of control and transparency when data is stored in the cloud. The CIA framework uses a novel logging and auditing technique that automatically logs any access to user data in a decentralized manner. It allows data owners to track how their data is being used according to service agreements or policies. The framework has two major components: a logger that is strongly coupled with user data, and a log harmonizer. The CIA framework aims to provide transparency, enforce access controls, and strengthen user control over their cloud data.
Decentralized access control with anonymous authentication of data stored in ...LeMeniz Infotech
Decentralized access control with anonymous authentication of data stored in clouds
A new decentralized access control scheme is proposed for secure data storage in clouds that supports anonymous authentication. In the proposed scheme, the cloud verifies the authenticity of the series without knowing the user’s identity before storing data. Access control is enabled, in which only valid users are able to decrypt the stored information.
JPJ1405 Decentralized Access Control With Anonymous Authentication of Data ...chennaijp
We are good ieee java projects development center in chennai and pondicherry. We guided advanced java techonolgies projects of cloud computing, data mining, Secure Computing, Networking, Parallel & Distributed Systems, Mobile Computing and Service Computing (Web Service).
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/java-projects/
This document summarizes a research paper that proposes a public auditing scheme for regenerating-code-based cloud storage. The scheme introduces a proxy that can regenerate authenticators on behalf of data owners to solve issues when authenticators fail in the absence of owners. It also designs a novel public verifiable authenticator generated using keys that can be regenerated using partial keys. Extensive analysis shows the scheme is provably secure and efficient enough to integrate into regenerating-code-based cloud storage.
Decentralized access control with anonymous authentication of data stored in ...Adz91 Digital Ads Pvt Ltd
The document proposes a decentralized access control scheme for secure data storage in clouds that supports anonymous authentication. The scheme allows clouds to verify the authenticity of users without knowing their identity before storing data. It also enables access control so that only valid users can decrypt stored information. The scheme prevents replay attacks and supports creation, modification, and reading of stored data. It further addresses user revocation and uses a decentralized approach for key distribution, unlike other centralized access control schemes for clouds.
Decentralized access control with anonymous authentication of data stored in ...Nexgen Technology
Ecruitment Solutions (ECS) is one of the leading Delhi based Software Development & HR Consulting Firm, which is assessed at the level of ISO 9001:2008 standard. ECS offers an awesome project and product based solutions to many customers around the globe.
In addition, ECS has also widened its wings by the way consummating academic projects especially for the final year professional degree students in India. ECS consist of a technical team that has solved many IEEE papers and delivered world-class solutions .
The document discusses privacy-preserving public auditing for ensuring data integrity in cloud computing. It provides an overview of cloud data services and the need for privacy mechanisms when data is shared. Several existing works related to public auditing and their advantages/disadvantages are summarized. The authors then propose a scheme for privacy-preserving public auditing that supports batch auditing and data dynamics. The scheme allows an external auditor to audit user data across multiple requests while preserving privacy.
This document proposes a system for public auditing of data stored in the cloud while preserving privacy. It uses homomorphic linear authenticators with random masking to guarantee data privacy. A third party auditor is used to verify the integrity of outsourced data on demand without retrieving the entire dataset. The system aims to prevent data leakage and enhance security with mobile message alerts when unauthorized access is detected. It further improves auditing using a multicast batch RSA authentication scheme.
Secure Data Sharing in Cloud Computing Using Revocable-Storage Identity-Based...Yashwanth Reddy
This document proposes a revocable-storage identity-based encryption (RS-IBE) scheme to provide secure data sharing in cloud computing. It discusses the system architecture, modules, UML diagrams, and testing process. The key components are the data provider, cloud users, and auditor. The data provider encrypts and uploads data to the cloud, and can later revoke access and update ciphertexts. Cloud users search for files and request decryption keys from the auditor. The auditor generates and provides the necessary keys. The document presents formal definitions for RS-IBE and describes a prototype implementation to demonstrate the approach.
A New Mode to Ensure Security in Cloud Computing ServicesMahmuda Rahman
The document presents a proposed model for ensuring security in cloud computing services. The model has two phases: (1) Storing data involves classifying data sensitivity, building indexes, encrypting data and generating authentication codes before transmitting to the cloud. (2) Retrieving data requires users to register, authenticate with the data owner, have their requests verified by the owner's digital signature before the cloud can process searches and return encrypted files to users, who decrypt with keys from owners. The goal is to secure data throughout the entire cloud computing process, from storage to transmission to retrieval, using multiple security techniques.
Key aggregate searchable encryption (kase) for group data sharing via cloud s...Pvrtechnologies Nellore
This document describes a proposed cryptosystem for secure and efficient data sharing in cloud storage. It allows a user to encrypt files with different public keys but send a receiver a single constant-size decryption key that gives decryption rights to any set of ciphertexts. This allows flexible sharing of encrypted data while keeping decryption keys compact. The proposed system aims to address disadvantages of existing approaches like unexpected privilege escalation exposing all data or inefficient key sizes. It provides security based on number-theoretic assumptions without relying on servers for access control.
This document discusses privacy-preserving access control for data stored in public clouds. It proposes a two-layer encryption approach where the data owner performs coarse-grained encryption and the cloud performs fine-grained encryption based on access control policies. This delegates access control enforcement to the cloud while preserving data confidentiality and user privacy. Existing single-layer encryption approaches burden the data owner with all encryption tasks. The two-layer approach more efficiently handles policy and user changes by only updating the outer encryption layer at the cloud.
Secure and-verifiable-policy-update-outsourcing-for-big-data-access-control-i...Kamal Spring
Due to the high volume and velocity of big data, it is an effective option to store big data in the cloud, as the cloud has capabilities of storing big data and processing high volume of user access requests. Attribute-Based Encryption (ABE) is a promising technique to ensure the end-to-end security of big data in the cloud. However, the policy updating has always been a challenging issue when ABE is used to construct access control schemes. A trivial implementation is to let data owners retrieve the data and re-encrypt it under the new access policy, and then send it back to the cloud. This method, however, incurs a high communication overhead and heavy computation burden on data owners. A novel scheme is proposed that enable efficient access control with dynamic policy updating for big data in the cloud. Developing an outsourced policy updating method for ABE systems is focused. This method can avoid the transmission of encrypted data and minimize the computation work of data owners, by making use of the previously encrypted data with old access policies. Policy updating algorithms is proposed for different types of access policies. An efficient and secure method is proposed that allows data owner to check whether the cloud server has updated the ciphertexts correctly. The analysis shows that this policy updating outsourcing scheme is correct, complete, secure and efficient.
Secure and-verifiable-policy-update-outsourcing-for-big-data-access-control-i...Kamal Spring
Due to the high volume and velocity of big data, it is an effective option to store big data in the cloud, as the cloud has capabilities of storing big data and processing high volume of user access requests. Attribute-Based Encryption (ABE) is a promising technique to ensure the end-to-end security of big data in the cloud. However, the policy updating has always been a challenging issue when ABE is used to construct access control schemes. A trivial implementation is to let data owners retrieve the data and re-encrypt it under the new access policy, and then send it back to the cloud. This method, however, incurs a high communication overhead and heavy computation burden on data owners. A novel scheme is proposed that enable efficient access control with dynamic policy updating for big data in the cloud. Developing an outsourced policy updating method for ABE systems is focused. This method can avoid the transmission of encrypted data and minimize the computation work of data owners, by making use of the previously encrypted data with old access policies. Policy updating algorithms is proposed for different types of access policies. An efficient and secure method is proposed that allows data owner to check whether the cloud server has updated the ciphertexts correctly. The analysis shows that this policy updating outsourcing scheme is correct, complete, secure and efficient.
Two-factor authentication and client-side encryption are proposed to securely store data in the cloud. The originality of the proposal includes: 1) Ensuring confidentiality by having each client encrypt data with a per-data key before storing in the cloud. 2) Authorized users can decrypt files only with their private key integrated into the metadata. Existing schemes focus on integrity but do not fully address dynamic data or prevent data leakage. The proposed system uses convergent encryption where keys are derived from plaintext hashes. It provides security against malicious users and efficient deduplication of uploaded files.
Revocation based De-duplication Systems for Improving Reliability in Cloud St...IRJET Journal
1) The document discusses improving the reliability of deduplication systems in cloud storage by implementing user revocation along with Shamir's secret sharing scheme and ramp secret sharing scheme.
2) Deduplication systems aim to eliminate redundant data and achieve single instance storage, but reliability and security are ongoing issues when users are revoked.
3) The paper proposes using Shamir's secret sharing algorithm and ramp secret sharing scheme for encryption to maintain reliability when users are removed by allowing the data to be rechecked for duplication.
A Secure & Scalable Access Method in Cloud Computingijsrd.com
This document proposes a new scheme for secure and scalable access control in cloud computing. It extends ciphertext-policy attribute-set based encryption (CP-ASBE) by incorporating a hierarchical structure of system users using a delegation algorithm. The proposed scheme allows a trusted authority and multiple domain authorities to generate keys for data owners and consumers. It defines access structures for encrypting files and issuing user keys with associated attributes. The scheme supports flexible attribute combinations, efficient revocation, and fine-grained access control for outsourced data in cloud computing.
Providing user security guarantees in public infrastructure cloudsKamal Spring
The infrastructure cloud (IaaS) service model offers improved resource flexibility and availability, where tenants – insulated from the minutiae of hardware maintenance – rent computing resources to deploy and operate complex systems. Large-scale services running on IaaS platforms demonstrate the viability of this model; nevertheless, many organizations operating on sensitive data avoid migrating operations to IaaS platforms due to security concerns. In this paper, we describe a framework for data and operation security in IaaS, consisting of protocols for a trusted launch of virtual machines and domain-based storage protection. We continue with an extensive theoretical analysis with proofs about protocol resistance against attacks in the defined threat model. The protocols allow trust to be established by remotely attesting host platform configuration prior to launching guest virtual machines and ensure confidentiality of data in remote storage, with encryption keys maintained outside of the IaaS domain. Presented experimental results demonstrate the validity and efficiency of the proposed protocols. The framework prototype was implemented on a test bed operating a public electronic health record system, showing that the proposed protocols can be integrated into existing cloud environments.
JPJ1435 Secure Data Retrieval For Decentralized Disruption-Tolerant Militar...chennaijp
We are good IEEE java projects development center in Chennai and Pondicherry. We guided advanced java technologies projects of cloud computing, data mining, Secure Computing, Networking, Parallel & Distributed Systems, Mobile Computing and Service Computing (Web Service).
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/java-projects/
JPD1422 Secure Data Retrieval for Decentralized Disruption-Tolerant Military...chennaijp
We have best 2014 free dot not projects topics are available along with all document, you can easy to find out number of documents for various projects titles.
For More Details:
http://jpinfotech.org/final-year-ieee-projects/2014-ieee-projects/dot-net-projects/
Implementation of De-Duplication AlgorithmIRJET Journal
The document describes an implementation of a data de-duplication algorithm using convergent encryption. It discusses how data de-duplication works to reduce storage usage by identifying and removing duplicate copies of data. Convergent encryption is used, which generates the same encrypted form of a file from the original file's hash, allowing duplicate encrypted files to be de-duplicated while preserving privacy. The algorithm divides files into blocks, generates hashes for each block, and encrypts the file blocks using the hashes as keys. When a file is uploaded, its hash is checked against existing hashes to identify duplicates, with duplicates replaced by pointers to the stored copy. This allows efficient de-duplication while encrypting data for privacy and security when stored
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
To Get any Project for CSE, IT ECE, EEE Contact Me @ 09666155510, 09849539085 or mail us - ieeefinalsemprojects@gmail.com-Visit Our Website: www.finalyearprojects.org
This document proposes a secure multi-owner attribute authorities based data sharing scheme for dynamic groups in the cloud. It aims to enable secure data sharing in dynamic groups where there is no fixed attribute authority, using a key policy attribute-based encryption method to select dynamic attribute authorities. The proposed scheme uses group signatures, signed receipts, and dynamic broadcast encryption to allow cloud users to anonymously share data. It reduces computation cost and storage overhead compared to existing works, as the encryption computation cost and storage overhead are independent of the number of revoked users.
This document summarizes a proposed scheme for secure data sharing in dynamic groups in the cloud. It addresses key challenges including how to securely share data with fine-grained access control when group membership changes frequently. The proposed scheme uses key policy attribute-based encryption (KP-ABE) and group signatures to allow any cloud user to anonymously share data. It leverages techniques like dynamic broadcast encryption and signed receipts to reduce computation and storage overhead, making the costs independent of the number of revoked users. The scheme aims to enable secure multi-owner data sharing where attribute authorities are also dynamic.
Key aggregate searchable encryption (kase) for group data sharing via cloud s...CloudTechnologies
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Psdot 12 a secure erasure code-based cloud storageZTech Proje
The document proposes a secure cloud storage system that uses a threshold proxy re-encryption scheme integrated with a decentralized erasure code. This allows the system to securely store and retrieve data, as well as securely forward data from one user to another without retrieving it directly. The system addresses limitations of traditional encryption for cloud storage by distributing keys and enabling storage servers to directly forward encrypted data between users.
766 a secure-data-sharing-in-cloud-storage-with-independent-key-generation-ce...revathirram
This document summarizes a research paper that proposes a mediated certificateless public key encryption (mCL-PKE) scheme for secure data sharing in cloud storage. The key points are:
1) The mCL-PKE scheme solves problems of key escrow and certificate revocation without using computationally expensive bilinear pairing operations.
2) It uses a security mediator to instantly revoke compromised users and enforce access policies. The mediator also supports partial decryption to preserve data confidentiality.
3) The scheme extends mCL-PKE with an access control list to allow the data owner to encrypt data only once for multiple authorized users, improving efficiency over previous pairing-based schemes.
Investigation on Revocable Fine-grained Access Control Scheme for Multi-Autho...IJCERT JOURNAL
Cloud computing is one of the emerge technologies in order to outsource huge volume of data inters of storage and sharing. To protect the data and privacy of users the access control methods ensure that authorized users access the data and the system. Fine grained-approach is the appropriate method for data access control in cloud storage. However, CP-ABE schemes to data access control for cloud storage systems are difficult because of the attribute revocation problem. Specifically, in this paper we investigate on revocable multi-authority Fine-grained-Scheme performance.
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Privacy preserving delegated access control in public clouds
1. Privacy Preserving Delegated Access Control in Public Clouds
ABSTRACT:
Current approaches to enforce fine-grained access control on confidential data hosted in the
cloud are based on fine-grained encryption of the data. Under such approaches, data owners are
in charge of encrypting the data before uploading them on the cloud and re-encrypting the data
whenever user credentials change. Data owners thus incur high communication and
computation costs. A better approach should delegate the enforcement offline-grained access
control to the cloud, so to minimize the overhead at the data owners, while assuring data
confidentiality from the cloud. We propose an approach, based on two layers of encryption that
addresses such requirement. Under our approach, the data owner performs a coarse-grained
encryption, whereas the cloud performs a fine-grained encryption on top of the owner encrypted
data. A challenging issue is how to decompose access control policies (ACPs) such that the two
layer encryption can be performed. We show that this problem is NP-complete and propose
novel optimization algorithms. We utilize an efficient group key management scheme that
supports expressive ACPs. Our system assures the confidentiality of the data and preserves the
privacy of users from the cloud while delegating most of the access control enforcement to the
cloud.
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2. EXISTING SYSTEM:
Many organizations have today ACPs regulating which users can access which data; these
ACPs are often expressed in terms of the properties of the users, referred to as identity
attributes, using access control languages such as XACML. Such an approach, referred to as
attribute based access control (ABAC), supports fine-grained access control which is crucial for
high-assurance data security and privacy. Supporting ABAC over encrypted data is a critical
requirement in order to utilize cloud storage services for selective data sharing among different
users. Notice that often user identity attributes encode private information and should thus is
strongly protected from the cloud, very much as the data themselves.
Approaches based on encryption have been proposed for fine-grained access control over
encrypted data. Those approaches group data items based on ACPs and encrypt each group with
a different symmetric key. Users then are given only the keys for the data items they are
allowed to access. Extensions to reduce the number of keys that need to be distributed to the
users have been proposed exploiting hierarchical and other relationships among data items
DISADVANTAGES OF EXISTING SYSTEM:
As the data owner does not keep a copy of the data, when ever user dynamics changes, the
data owner needs to download and decrypt the data, re-encrypt it with the new keys, and
upload the encrypted data. The user dynamics refers to the operation of adding or revoking
users. Notice also that this process must be applied to all the data items encrypted with the
same key. This is inefficient when the data set to be re-encrypted is large.
In order to issue the new keys to the users, the data owner needs to establish private
communication channels with the users.
The privacy of the identity attributes of the users is not taken into account. Therefore the
cloud can learn sensitive information about the users and their organization.
They are either unable or inefficient in supporting fine-grained ABAC policies.
3. PROPOSED SYSTEM:
In this paper, we propose a new approach to address this shortcoming. The approach is based on
two layers of encryption applied to each data item uploaded to the cloud. Under this approach,
referred to as two layer encryption (TLE), the data owner performs a coarse grained encryption
over the data in order to assure the confidentiality of the data from the cloud. Then the cloud
performs fine grained encryption over the encrypted data provided by the data owner based on
the ACPs provided by the data owner. It should be noted that the idea of two layer encryption is
not new. However, the way we perform coarse and fine grained encryption is novel and
provides a better solution than existing solutions based on two layers of encryption. We
elaborate in details on the differences between our approach and existing solutions in the related
work section. A challenging issue in the TLE approach is how to decompose the ACPs so that
fine-grained ABAC enforcement can be delegated to the cloud while at the same time the
privacy of the identity attributes of the users and confidentiality of the data are assured. In order
to delegate as much access control enforcement as possible to the cloud, one needs to
decompose the ACPs such that the data owner manages minimum number of attribute
conditions in those ACPs that assures the confidentiality of data from the cloud. Each ACP
should be decomposed to two sub ACPs such that the conjunction of the two sub ACPs result in
the original ACP. The two layer encryption should be performed such that the data owner first
encrypts the data based on one set of sub ACPs and the cloud re-encrypts the encrypted data
using the other set of ACPs. The two encryptions together enforce the ACP as users should
perform two decryptions to access the data.
ADVANTAGES OF PROPOSED SYSTEM:
The TLE approach has many advantages.
When user dynamics changes, only the outer layer of the encryption needs to be updated.
Since the outer layer encryption is performed at the cloud, no data transmission is required
between the data owner and the cloud.
4. Further, both the data owner and the cloud service utilize a broadcast key management
whereby the actual keys do not need to be distributed to the users.
Instead, users are given one or more secrets which allow them to derive the actual symmetric
keys for decrypting the data.
SYSTEM CONFIGURATION:-
HARDWARE CONFIGURATION:-
Processor - Pentium –IV
Speed - 1.1 Ghz
RAM - 256 MB(min)
Hard Disk - 20 GB
Key Board - Standard Windows Keyboard
Mouse - Two or Three Button Mouse
Monitor - SVGA
SOFTWARE CONFIGURATION:-
Operating System : Windows XP
Programming Language : JAVA/J2EE.
Java Version : JDK 1.6 & above.
Database : MYSQL
REFERENCE:
Mohamed Nabeel, Elisa BertinoFellow, IEEE “Privacy Preserving Delegated Access Control in
Public Clouds”- IEEE TRANSACTIONS ON KNOWLEDGE AND DATA
ENGINEERING, 2013.